29 Apr 2011 12:02 pm. It should be pretty easy to see that it is a nose really. If you watch some original artwork you'll see that the white, shiny area isn't even near one of the edges of the nose and can therefore not be a tooth.t should be pretty easy to see that it is a nose really. If you watch some original artwork you'll see that the white, shiny area isn't even near one of the edges of the nose and can therefore not be a tooth.
S N 2). Nucleophilic substitution is the reaction of an electron pair donor (the nucleophile, Nu) with an electron pair acceptor (the electrophile). An sp 3 -hybridized electrophile must have a leaving group (X) in order for the reaction to take place.ince the nucleophile is free to attack from either side, this reaction is associated with racemization. In both reactions, the nucleophile competes with the leaving group. Because of this, one must realize what properties a leaving group should have, and what constitutes a good nucleophile.
The relative rate at which a nucleophile (Nu:-) reacts to displace (substitute for) a leaving group is called ânucleophilicityâ. The first reaction is much faster than the second because I- is a much better Nu:- than Cl-. The leaving group (HOH) was the same in both cases.